DOCS
Stamp is messaging between Solana addresses. If you have a wallet, you already have an inbox.
SENDING A MESSAGE
- 01
Connect a wallet
Your wallet is your identity. There is no username, no email and no signup form. Connect, sign once, and your inbox is open.
- 02
Paste an address
Any signable Solana wallet works. Stamp rejects malformed and off-curve addresses before you send.
- 03
Send
No transaction and no gas. If the recipient has never opened Stamp, the message waits for them. It appears the moment they connect that wallet.
REQUESTS
A message from a wallet you have never spoken to lands in Requests, not your inbox. Accept it and the conversation moves across and the sender can reply freely. Ignore it and nothing happens.
You can block any wallet from the conversation menu. Blocking is silent. The other side is never told, and nothing they send afterwards reaches you.
LIMITS
Direct messaging does not require a token. The limits exist because wallets are free to create, and an open inbox with no ceiling fills with noise. Holder tiers are planned; the numbers below are what they would be.
| LIMIT | FREE | HOLDER (PLANNED) |
|---|---|---|
| New conversations per hour | 5 | 50 |
| Messages per minute | 30 | 120 |
| Messages into an unanswered request | 25 | Unlimited |
| Longest message, characters | 2,000 | 8,000 |
| Group chats | No | Create and join |
| Images | No | Planned |
ADDRESSES THAT CANNOT RECEIVE
Some valid-looking Solana addresses have no owner and no key, so nobody can ever sign in and read them. Stamp rejects those before you send rather than letting the message disappear.